Explanation A spinal nerve : It can be defined as a mixed nerve that carries sensory, motor, and autonomic signals or information between the spinal cord and the remaining body. In the human body, there are present 31 pairs of spinal nerves. These are located one on each side of the vertebral column. A nerve plexus: It is a plexus (branching network) of intersecting nerves. A nerve plexus is composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood vessels. There are five spinal nerve plexuses, except in the thoracic region, as well as other forms of autonomic plexuses, many of which are a part of the enteric nervous system. The five plexus of spinal nerves and the associated nerves: axillary, phrenic, ilionguinal, obturator, pudendal, radial and sciatic. The crutch paralysis: It is a condition that occurs due to the incorrect use of a crutch. The abnormal use of crutch could lead to an impaired sensory or the motor function to the forearm, arm and hand due to the compression of nerves that result into the crutch paralysis...

Laboratory Manual For Human Anatomy & Physiology

4th Edition

ISBN: 9781260159363

Author: Martin, Terry R., Prentice-craver, Cynthia

Publisher: McGraw-Hill Publishing Co.

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Question

Chapter 28, Problem 4.2CT

Summary Introduction

To write:

The plexus of spinal nerves that are involved in the crutch paralysis. The way by which a person can avoid this type of injury.

Introduction:

The spinal cord can be defined as the cylindrical bundle of the nerve fibers and connected tissue. It is surrounded in the spinal region and joins approximately all the body parts to the brain. It forms the central nervous system with the brain.

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Chapter 28, Problem 4.1CT

Chapter 29, Problem 1PL

Students have asked these similar questions

Improper use of crutches can produce a condition known as crutch paralysis, which is characterized by a lack of response by the extensor muscles of the arm and a condition known as wrist drop. Which nerve is involved?

Walter has a spinal cord injury. Dermatome testing shows that he has no feeling below his waist on his left side. Myotome testing shows he has complete movement throughout his body on both sides. What part of the spinal cord is likely injured?

Bell’s palsy is a disorder of the facial nerve involving temporary or permanent paralysis of the muscles of facial expression. Which muscles of the head and face would be unaffected by Bell’s palsy?

Chapter 28 Solutions

Laboratory Manual For Human Anatomy & Physiology

Ch. 28 - The ____________ is the most superficial membrane...Ch. 28 - The inferior end of the adult spinal cord...Ch. 28 - Prob. 3PL Ch. 28 - Which of the following is not part of the gray...Ch. 28 - The central canal of the spinal cord is located...Ch. 28 - The brachial plexus is formed from components of...Ch. 28 - There are eight pairs of cervical spinal nerves....Ch. 28 - The major ascending (sensory) and descending...Ch. 28 - Match the terms in column A with the descriptions...Ch. 28 - Prob. F28.14A

Ch. 28 - The spinal cord gives rise to 31 pairs...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The ______________ is a groove that extends the...Ch. 28 - In a spinal cord cross section, the posterior...Ch. 28 - The axons of motor neurons are found in the...Ch. 28 - The _______________ connects the gray matter on...Ch. 28 - The _______ in the gray commissure of the spinal...Ch. 28 - The white matter of the spinal cord is divided...Ch. 28 - There are ______________________ pairs of cervical...Ch. 28 - There are ______________________ pairs of sacral...Ch. 28 - Cervical spinal nerve pair C1 originates between...Ch. 28 - Spinal nerves L4 through S4 form a...Ch. 28 - The gray matter of the spinal cord is divided into...Ch. 28 - The spinal cord ends just inferior to L1 in a...Ch. 28 - Severing the ______________________ nerves of the...Ch. 28 - The inferior and superior gluteal nerves of the...Ch. 28 - To block chronic pain in a patient, sometimes...Ch. 28 - Prob. 4.2A Ch. 28 - Injuries to the vertebral column and spinal cord...Ch. 28 - Why are intramuscular injections given in the...Ch. 28 - Prob. 4.2CT

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